CN1123329C

CN1123329C - Trisection topsheets for disposable absorbent articles and disposable absorbent articles having such trisection topsheets

Info

Publication number: CN1123329C
Application number: CN93108731A
Authority: CN
Inventors: M·E·弗里兰; P·J·阿伦
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1992-06-12
Filing date: 1993-06-12
Publication date: 2003-10-08
Anticipated expiration: 2013-06-12
Also published as: MY109514A; EP0644747B1; PH30352A; AU679183B2; JP3382942B2; FI945815A; JPH08500494A; DE69320957D1; BR9306535A; SG79896A1; AU4397093A; WO1993025170A1; ES2120505T3; DE69320957T2; CN1082871A; EP0644747A1; CA2137222A1; CA2137222C; HK1012950A1; US5269775A

Abstract

A topsheet for use in a disposable absorbent article. The topsheet is divided into three trisections disposed in a particular arrangement along the longitudinal axis of the disposable absorbent article. The front trisection has no elastic extensibility. The central trisection has elastic extensibility in the transverse direction. The rear trisection has elastic extensibility in the longitudinal direction. If desired, the topsheet may be further provided with an aperture for communicating fecal material through the topsheet into a void space in the disposable absorbent article. An exemplary disposable absorbent article is also included in the disclosure.

Description

The top flat that is used for disposable absorbent article

Technical field

The present invention relates to can be used for the top flat of disposable absorbent article, particularly relate to and the sort ofly can make the top flat of using in feces and the out of gear mesh disposable absorbent article of wearers skin, and the disposable absorbent article that includes this top flat.

Background technology

Some kinds of disposable absorbent articles are being known in the art.Disposable absorbent article can be worn the waist around the wearer, in order to collect and to receive and keep wearer's ejection.These disposable absorbent articles all have one when wearing and wearer's body is contacted, liquid permeable topsheet.The human ejection that comprises urine and feces can pass that top flat is kept within it by absorbent cores or near it.

Latest developments in this technical field comprise the sort of disposable absorbent article of attempting to make feces to keep apart with wearer's skin.This disposable absorbent article has top flat with holes usually, so that feces can be by the hole by top flat, and this top flat is rubber-like, connects thereby can form close kiss with wearer's health, particularly buttocks.

The remainder of disposable absorbent article can with top flat between separate, to form a shape space, space that is used to receive feces.Formerly the example of some this respect in the technology has been disclosed in the United States Patent (USP) 4834737 of granting Khan on May 30th, 1989 and had granted on November 5th, 1991 in people's such as Holt the United States Patent (USP) 5062840.

Formerly some in the technology attempts only relating to the selected part of some rubber-like in the disposable absorbent article.If for instance, the top flat of disposable absorbent article can be divided into some different parts, and some parts wherein is to be with elasticly, and other are not with.Formerly the example of some this respect in the technology be disclosed in the United States Patent (USP) 4655760 of granting people such as Morman on April 7th, 1987 and August in 1978 disclosed Tong on the 9th UK Patent Application.

Other trials in the technology formerly relate to the special part of some rubber-like in the disposable absorbent article.This elasticity reaches by linearity elastic webbing or flexure strip.Formerly the further achievement in the technology comprises that also having tight kiss suitable elastic modelling quantity, that the wearer is comforted pastes the formula top flat.Formerly the example of some this respect in the technology has been disclosed in the United States Patent (USP) 4892536 of granting people such as DesMarais January 9 nineteen ninety, granted the United States Patent (USP) 4990147 of Frceland on February 5th, 1991, granted people's such as Leroy United States Patent (USP) 5037415 on August 6th, 1991 and granted people's such as Allen United States Patent (USP) 5037416 on August 6th, 1991, above-mentioned first, second and the 4th part of patent have been transferred the possession of with the applicant total.

European patent EP 0357298A2 has disclosed a kind of disposable absorbent article of diaper that for example is, it has the bottom of a liquid non-permeate, the permeable lining of urine, and the absorbent cores between this bottom and lining.This lining has the passage that makes in the solid waste inflow absorbent cores, thereby this refuse and wearer's skin are separated.This lining has improved the stickiness between absorbent article and the wearer by longitudinally not shrinking with the longitudinal elasticity band of the adjacent setting of passage, and can not influence leak-proofly, and the various piece of this absorbent article plays different effects.

Yet, formerly technology attempt to construct can be used for disposable absorbent article, in the time of making the top flat that feces and wearers skin keep apart, all do not consider out the key point that can make this top flat have the competition interests effectively.Such as, in above-mentioned some technology instruction, do not disclose and be not used for the hole that feces is carried, thereby can not speak of the needs that feces should be transported to the position that a certain and wearer separate yet.Some other formerly technology fail suitably to consider how to satisfy when this disposable absorbent article is worn and need according to the wearer on the bodily form and residual quantity on the excretory function and the needs of regulating.And each formerly technology all do not refer to when the disposable absorbent article of making dirty is removed and the wearer will clean the time in the difference that cleans on wearer's trunk each several part.

Obviously this shows, still needing a kind of like this top flat in the art, it should be able to correctly consider feces and wearer's skin to be separated and when this kind disposable absorbent article is worn the wearer to be worn comfortable.This top flat also should be considered different wearers and the difference contacted torso portion of top flat, and these trunks of human body when disposable absorbent article is worn can with its adaptive effectively difference and when disposable absorbent article is removed to its difference that cleans.

Summary of the invention

The purpose of this invention is to provide a kind of top flat that is used for disposable absorbent article, make when wearing this absorbent article, this disposable absorbent article can more cosily be fitted on wearer's the body, and can the economical with materials cost, and the permeability of enhance liquid, for example urine.

The invention provides a kind of top flat that is used for disposable absorbent article, this absorbent article has an Attacking Midfielder and holds limit, a low back end limit and a longitudinal axis, described top flat comprises: the Attacking Midfielder with described disposable absorbent article holds the juxtaposed previous section in limit, and described previous section does not have elasticity basically; Juxtaposed aft section in low back end limit with described disposable absorbent article, but described aft section is an elastic elongation longitudinally; And the mid portion between described previous section and described aft section, but described mid portion is along horizontal elastic elongation; Wherein said mid portion is H shape substantially, thereby this mid portion extends longitudinally at least one of described previous section and described aft section.

According to a further aspect in the invention, a kind of top flat that is used for disposable absorbent article is provided, this absorbent article has an Attacking Midfielder and holds limit, a low back end limit and a longitudinal axis, described top flat comprises: the Attacking Midfielder with described disposable absorbent article holds the juxtaposed previous section in limit, and described previous section does not have elasticity basically; Juxtaposed aft section in low back end limit with described disposable absorbent article, but described aft section is an elastic elongation longitudinally; And one be positioned at described previous section and the mid portion of described aft section time, but described mid portion is along horizontal elastic elongation.

Description of drawings

Though description and appending claims particularly point out and have drawn a clear the scope of protection of present invention, can believe, can better understand the present invention by the explanation of doing below in conjunction with accompanying drawing.Parts identical among each figure illustrate with identical label, and similar parts then add additional marking and illustrate.

Fig. 1 is that it has its flexible direction flexure strip as shown by arrows according to the top view of a top flat of the present invention's structure.

Fig. 2 is the top view with disposable absorbent article of top flat shown in Figure 1.

Fig. 3 is the vertical vertical cross section of disposable absorbent article under user mode shown in Figure 2.

Fig. 4 is the top view that has according to a conversion embodiment of the disposable absorbent article of the top flat of the present invention structure, and this top flat has its flexible direction rectilinearity elastic webbing as shown by arrows.

Fig. 5 according to the present invention structure, have atresia and vertically extend upwardly the top view of the disposable absorbent article of the mid portion that is extended down to front, aft section, various piece is along being telescopic on the direction shown in the arrow.

Fig. 6 is a disposable absorbent article shown in Figure 5 perspective view when being in user mode.

Fig. 7 constructs, has the top graph of the top flat that is provided with the flexure strip that the shaped form border is arranged between three parts according to the present invention, and various piece has along the retractility on the direction shown in the arrow.

The specific embodiment

Referring to Fig. 1, the present invention includes a top flat 22 that can use in the lump with disposable absorbent article 20.Here, " top flat " refers to the permeable top layer of any liquid in all disposable absorbent articles as shown in Figure 2.When disposable absorbent article 20 was worn, this top flat 22 contacted with wearer's skin, and the absorbent cores 26 that this top flat 22 can prevent to be loaded in the disposable absorbent article 20 produces substantial the contact with wearer's skin.

As shown in Figure 1, the top flat 22 according to the present invention's structure is divided into three part: previous section 22F, mid portion 22C, aft section 22R.Aft section and

mid portion

22R, 22C are rubber-likes, and have different elasticity directions.Aft section 22R is elastic stretching longitudinally, and mid portion 22C is can be tensile along transverse elasticity.The elastic stretching direction is illustrated by arrow among the figure.Previous section 22F does not have elastic stretching.

Top flat 22 can (but be not must) has one to be used to the hole 46 that makes feces pass through top flat 22.According to be discussed below according to some preferred embodiments of the top flat 22 of the present invention structure as can be known, top flat 22 also can gratifying work under the situation that does not have hole 46.

Preferred top flat 22 should be gentlely close, comfortable and non-irritating to wearers skin.Top flat 22 preferably is processed into hydrophilic, so that can promptly be delivered to the human body ejection in the core 26 of disposable absorbent article 20.

Referring to Fig. 2, " disposable absorbent article " refers to and can be through the wearer on one's body to collect the excremental packaging type clothing of human body.This disposable absorbent article is generally promptly being thrown away after once using, and do not wash or store once more in some way (though some parts can utilize once more or once more amalgamation use).

A kind of preferred disposable absorbent article according to the present invention's structure comprises the diaper that can supply the baby to wear.This disposable absorbent article 20 is by 22, one liquid-tight egative films 24 of a liquid permeable topsheet, and the absorbent cores 26 between top flat 22 and egative film 24 is formed.Top flat 22 and egative film 24 are joined together along periphery at least in part, to guarantee absorbent cores 26 rests in desired position.

Disposable absorbent article according to the present invention structure can further include flexible leg cuff and/or stops leg cuff, and slop can spill by its leg opening when preventing that disposable absorbent article 20 from being worn.A kind of disposable absorbent article 20 according to the present invention structure preferably also includes elastic waist belt, so that make these goods 20 and wearer's the waist can be more adaptive.Can further include aft section 42 parallel bonding belt fixation kits 36 that are provided with disposable absorbent article 20 according to the disposable absorbent article 20 of the present invention structure, so that disposable absorbent article 20 can be fixed on around the waist easily.For simplicity's sake, do not illustrate among the figure elasticity leg cuff, stop leg cuff and elastic waist belt.

If desired together, then can a kind of elastic webbing 54 be contained on the disposable absorbent article 20 to form United States Patent (USP) 4081031 leg cuff, grant Buell on March 28th, 1978 with reference to having disclosed with these parts and disposable absorbent article 20 amalgamations; Disclosed and can be how will stop that leg cuff is contained in United States Patent (USP) 4909803 on the disposable absorbent article 20, grant people such as Aziz March 20 nineteen ninety; Disclosed and how to have made the elastic webbing fixation kit and how it is contained in United States Patent (USP) 3848594 on the disposable absorbent article 20, grant Buell on November 19th, 1974; Disclosed and how to have made United States Patent (USP) 4816025 elastic waist belt that is applicable to disposable absorbent article 20, grant Foreman on March 28th, 1989.These the four parts patent documentations of all having transferred the possession of to having with the applicant are cited as a reference at this, can how easily these supplementary features to be incorporated into according to the disposable absorbent article 20 of the present invention's structure to be used for illustrating.

Fig. 2 shows according to the present invention structure a kind of and is in the open and flat disposable absorbent article 20 when the deployed condition that does not have an elastic shrinkage.Top flat 22 and egative film 24 are limiting the periphery of disposable absorbent article by common mode, and this periphery is maximum extension, the outmost limit of disposable absorbent article 20.This periphery comprises that an Attacking Midfielder holds limit 32, a low back end limit 34 and two vertical sides.

It is such some parts on the disposable absorbent article 20 that the Attacking Midfielder holds limit 32 and low back end limit 34, promptly when being worn, they are around the waist of living in the wearer, and when the wearer was in erectility, they were usually located at the highest position of disposable absorbent article 20.Vertically side is that disposable absorbent article 20 peripheries are gone up the part that the connection Attacking Midfielder holds limit 32 and low back end limit 34.Part between limit 32 and the low back end limit 34 is held the Attacking Midfielder on the disposable absorbent article 20 by the crotch portion of disposable absorbent article, and it generally is between wearer's two lower limbs when wearing.

The absorbent cores 26 of disposable absorbent article 20 can not stretch always and hold limit 32 and low back end limit 34 into the Attacking Midfielder, and this makes top flat 22 and egative film 24 to be connected to each other in this zone and to seal, and also can be connected to each other in other zone and seal.The Attacking Midfielder holds about 5% of longitudinal length that vertically stretching of limit 32 and low back end limit 34 be preferably this disposable absorbent article, and this longitudinal length refers to such an extent that be that edge from this disposable absorbent article 20 is to the distance the lateral shaft TT of this disposable absorbent article.

Here, " vertically " length of disposable absorbent article 20, direction or axle, refer to be when this disposable absorbent article 20 is worn corresponding to by wearer's front side to the length of its rear side, direction or spool." laterally " length of disposable absorbent article 20, direction or axle, normally be orthogonal to longitudinally, when this disposable absorbent article is worn with the corresponding to length of its side direction, direction or spool.Lateral shaft TT is by holding the mode on limit 32 and low back end limit 34 that disposable absorbent article 20 is divided into front portion 40 and rear portion 42 corresponding to the Attacking Midfielder respectively." Z-direction " usually and vertical and horizontal quadrature and is not positioned at the plane of disposable absorbent article 20.

It is that the wearer of about 7.3-12.2 kilogram (16-27 pound) wears that each embodiment of top flat 22 described herein and disposable absorbent article 20 is suitable for body weight.Be understood that, wear, then top flat 22 and disposable absorbent article 20 bi-directional scalings are got final product if plan to be used for littler or bigger wearer (comprising the adult) according to the top flat 22 of the present invention's structure and disposable absorbent article 20.

The size that is made is suitable for wearer's disposable absorbent article worn of above-mentioned scope, and the longitudinal size of its top flat 22 can be about 43.8 centimetres (17.25 inches), and the longitudinal size of egative film 24 can be about 46.4 centimetres (18.25 inches).The difference on longitudinal size between top flat 22 and 24 egative films is that top flat 22 is dwindled by perspective relation with respect to egative film 24, thereby can form a void space between them, even is still when absorbent cores 26 is contained between top flat 22 and 24 egative films so.This top flat 22 and egative film 24 according to the present invention's structure are respectively about 15.9 centimetres (6.25 inches) and about 21.3 centimetres (8.4 inches) at the lateral dimension of crotch portion part.

Each parts of disposable absorbent article 20 can combine various planforms by the known mode of those skilled in the art.Some preferred construction shape has been disclosed in the United States Patent (USP) 3860003 of granting Buell on January 14th, 1975 and grants March 20 nineteen ninety in people's such as Aziz the United States Patent (USP) 4909803, these patent documentations of having transferred the possession of to having with the applicant are introduced into here as a reference, to be used for disclosing the planform of known and preferred some disposable absorbent article.At one more in the preferred embodiment, the planform of disposable absorbent article 20 is corresponding to people such as Buell given technology instruction in the No.07/715152 U.S. Patent application of submitting on June 13rd, 1991.

To examine or check each parts of disposable absorbent article 20 below in more detail.As mentioned above, top flat 22 and egative film 24 normally stretch jointly and link together along the part periphery at least.Here, term " connection " refers to a kind of state, i.e. the first or first parts or directly adhere to or be connected on the second portion or second parts or adhere to earlier or be connected on mid portion or the intermediate member and then adhere to indirectly or be connected state on the second portion or second parts.To carrying out the life-span that purpose of connecting is to prolong disposable absorbent article 20 between first or first parts and the second portion or second parts.

Top flat 22 can be connected with the known any way in present technique field with egative film 24, such as pastes connection or heat seal connection or the like.The mode of a kind of particularly preferred connection top flat 22 and egative film 24 is Century 5227 or the HL1258 type bonding agents that adopt the hot-melt adhesive produced such as the Century Adhesives by the Columbus of Ohio, USA and sold by the H.B.Fuller Company of the St.Paul of Minn..In a particularly preferred embodiment, paste connection by vertical bonding realization that brings.

The size of absorbent cores 26 on its vertical and horizontal is generally all little than top flat 22 and egative film 24.Here, " core (absorbent cores) " refers to and is used in the disposable absorbent article 20 absorbing and the excremental parts of harvesting human body.The upper and lower of absorbent cores 26 all have an opposed major surfaces, and available (if necessary) one or more layers fabric (not shown) wraps it, or are coated with and are covered with separating medium, to reduce the friction to feces.

If be provided with tissue layer, can also improve the hot strength of absorbent cores 26 and reduce cracking or agglomeration possible when moistening.Tissue layer can also further be improved the horizontal siphon to liquid, and the absorbed liquid that distributes more equably on whole absorbent cores.Have now found that the performance of tissue layer that has its basis weight and for about every square metre 16 gram (per 8000 square feet 10 pounds), air transmission coefficient for 30 cubic metres of about every square metre of per minutes (every square feet per minute 100 cubic feet) and pressure reduction be 13 millimeters of water (0.5 inches of water(in H) is fine.And, top flat 22 can also with core 26 separated attitudes, the core 26 of also can reeling.

Absorbent cores 26 can be made with normally used various materials, and the wood pulp such as pulverizing typically is called as gas felt or the like.If necessary, absorbent cores 26 can also further include at the conventional in the art absorption-type gel rubber material that uses.Special needs to be pointed out is, absorbent cores 26 also can be granted 4610678 given technology instructions of people's such as Weisman United States Patent (USP) according in JIUYUE, 1986 on the 9th and be made, this patent has been transferred the possession of to total with the applicant and introduce as a reference at this, how to make and is applicable to absorbent cores 26 of the present invention to be used for explanation.Have now found that, grant according on April 19th, 1988 people such as Brandt, now transferred the possession of the absorbability gel rubber material of making for the United States Patent (USP) Re.32649 that has with the application, be what to be applicable to according to the disposable absorbent article 20 of the present invention's structure.

If necessary, the absorbent cores 26 in a particularly preferred embodiment can also have harvesting district and trapping region separately.Harvesting district has than higher average density of trapping region and the average basis weight of Geng Gao, thereby makes trapping region can effectively and apace catch the liquid of discharging in the residence and be transported to the harvesting district with long-term harvesting.This absorbent cores 26 can be granted people's such as Alemany United States Patent (USP) 4834735 given technology instructions according on May 30th, 1989 and be made, this patent has been transferred the possession of for having with the applicant and introducing as a reference at this, to be used to illustrate bottom how to make particularly preferred core 26.A kind of material of fit closely core 26 is fiber absorbs gel rubber materials of selling with trade mark Fibersorb such as the Atlantic Richfi-eld Company by the Los Angeles of California, USA.

Core 26 can adhere to respectively with the known any connected mode in present technique field and is connected on top flat 22 and/or the egative film 24.A kind of particularly preferred connected mode is to utilize spiral line type and vertical and horizontal banding pattern bonding agent to carry out bonding.Particularly preferred binding agent comprises the bonding agent such as Century5227 or the like by the Century Adhesives Inc. production of the Columbus of Ohio, USA, the XPO-9-035 bonding agent that HL-1258 bonding agent of being sold by the H.B.Fuller Company of the St.Paul of Minn. and the Minnesota Mining and ManufacturingCompany of Minnesotan St.Paul produce.

Egative film 24 is what not see through such as urine or the like liquid, and can prevent to be absorbed and liquid wets underwear, clothes and the sheet of harvesting by absorbent cores.Here, " egative film " refers to and be arranged in any barrier layer that 26 outsides and the liquid that be used for being absorbed of absorbent cores is stored in disposable absorbent article 20 when disposable absorbent article worn.Preferred egative film 24 should be soft, submissive and can easily match with total shape, the profile of wearer's body.

Egative film 24 can be the polyolefin film such as polyethylene or the like, and its thickness can be about 0.01-0.051 millimeter (0.005-0.002 inch).If necessary, egative film 24 can carry out embossing or surface roughening processing, is similar to the outward appearance of clothes with formation, or can also has airway, so that steam is overflowed.The egative film 24 that is suitable for can be made of the straight-chain low density polyethylene of about 45-90% and the polyacrylic mixture of about 10-55%.The thin film that typically can constitute egative film 24 comprises the Tredegar Industries by the Terre Haute of Indiana, USA, and is that Inc. sells, as the RR8220 type mixture of inflation film with as the RR5475 type mixture of plastic casting film.

Referring to Fig. 3, preferred top flat 22 is vertically to be shortened by perspective relation along it with respect to the core 26 of this disposable absorbent article 20 and/or egative film 24.This structure will produce a void space 52 between core 26 and top flat 22.

Above-mentioned top flat 22 also further comprises a hole 46 (referring to Fig. 2, Fig. 3) that is positioned at the lateral centre of longitudinal axis LL.Hole 46 provides a path that makes feces enter void space 52 by top flat 22 from anal orifice.Absorbability gel rubber material in the core 26 does not preferably overlap with hole 46, thereby when a large amount of urine load occurring, gel lump can not occur yet.

Hole 46 can be any required shape, and particularly preferred shape is that to have longitudinal size be that about 5.1 centimetres (2.0 inches) and lateral dimension are the ellipse of about 3.8 centimetres (1.5 inches).When this disposable absorbent article was worn, the rearmost edge in hole 46 should be positioned at least apart from low back end limit 34 about 15.2 centimetres (6.0 inches) to be located, and is preferably about 17.8 centimetres (7.0 inches) and locates.

The top flat 22 that is suitable for can also be used such as perforated foams, apertured plastic films, and natural fiber material (as the wood fiber or cotton fiber or the like), the compositions of composite fibre materials (as polyester or polypropylene film or the like) or above-mentioned material is made.A kind of particularly preferred top flat 22 include long for about 15.9 millimeters (0.62 inches), fiber number is that per 9000 meters length heavily are the polypropylene fibre of 22 grams (22 danier).Top flat 22 can be with many kinds of technology manufacturings, and can be made by weaving, on-woven, centrifugal stickup, combing or the like mode.

A kind of particularly preferred top flat 22 is to use combing and the molding of hot sticky subsides mode, its weight is every square metre of about 18-25 gram, along the minimum dry hot strength on the machine direction is approximately to restrain for every centimetre 400, is about every square centimeter 55 gram along the minimum moistening hot strength on the cross-machine direction.A kind of suitable top flat 22 is that the name of design that Inc. provides is the product of P-8 by the Veratec of branch company of the International PaPer Company of the Walpole of Massachusetts, United States.

Referring to Fig. 1, the top flat 22 of constructing according to the present invention can be divided into three parts by a kind of specific structure configuration along the longitudinal axis LL of disposable absorbent article 20 again.

Aft section 22R has an assembly that this aft section 22R longitudinal elasticity is shunk.Mid portion 22C has an assembly that this mid portion transverse elasticity is shunk.Previous section 22F not can be previous section 22F elastic assembly is provided.

Aft section 22R and mid portion 22C have the elastic extension of vertical and horizontal respectively, and have been illustrated by arrow among the figure, and the two-dimension elastic sheet of available routine obtains this retractility.Here, if its key dimension is positioned at the plane of top flat 22 and less relatively along the thickness on the Z-direction, think that then " sheet " is two-dimentional.Certainly should be realized that because it still has thickness in the Z-direction, thereby this just from conceptive be two-dimentional.But this thickness on the Z-direction is quite little, to such an extent as to can be omitted compared with the vertical and horizontal size of the front portion of this top flat 22, rear portion, middle three

part

22F, 22R, 22C.

According to particularly preferred each

elastic part

22R, 22C of the top flat 22 of the present invention structure, the extensibility under the tensile load effects of about 800 grams along every centimetre on its width should be greater than 50% and less than 350%.This extensibility under this tensile load can make top flat 22 by aforementioned manner the wearer be felt as snug as a bug in a rug.This top flat 22 can be made by people's such as the aforesaid Allen of granting United States Patent (USP) 5037416, this patent has been transferred the possession of to total with the applicant and introduce as a reference at this, to be used for illustrating how to produce the aft section 22R that is specially adapted to top flat 22 of the present invention and the material of mid portion 22C.

Aft section 22R with elasticity scalability longitudinally can make top flat 22 closely kiss with wearer's buttocks and connect.Here, if the direction of the elastic stretching main shaft of parts with the scope of longitudinal axis LL direction ± 45 ° in, think that then these parts are " but longitudinally elastic telescopic ", and can longitudinally provide the longitudinal elasticity retractility another parts.

This longitudinal elasticity retractility makes in the zone on disposable absorbent article 20 contiguous low back end limits 34, can form a void space 52, so that receive feces better.Importantly aft section 22R should not subside or hang down in the void space 52, otherwise just may hinder transmission or the migration of feces away from perforate 46, thereby can cause having only a spot of feces can pass through hole 46, remaining then can be bonded on the wearer's skin or stay in the zone of mid portion 22C.

For at this each illustrated embodiment, aft section 22R from low back end limit 34 to the longitudinal size of the intersection of mid portion 22C, can be about 20.3 ± 1.9 centimetres (8 ± 0.75 inches).This aft section 22R can be two-dimentional sheet shape, and can according to top discussed and given appear reason, grant people such as Allen now transferred the possession of to instruct and made for technology given in the United States Patent (USP) 5037416 that has with the applicant.

According to the mid portion 22C of the top flat 22 of the present invention structure, transversely be that elasticity is telescopic at it.Here, if the direction of the elastic stretching main shaft of parts with the scope of transverse axis T T direction ± 45 ° in, think that then these parts are " but along laterally elastic telescopic ", and can be to another parts along the transverse elasticity retractility laterally is provided.

The advantage of this structure is exactly that this disposable absorbent article 20 holds the crotch between limit 32 and the low back end limit 34 partly can shrink its Attacking Midfielder.This cross-direction shrinkage makes this disposable absorbent article 20 can be common hourglass shape, thereby cosily is suitable for the wearer when disposable absorbent article 20 wears Shi Nenggeng.

Yet this cross-direction shrinkage may closed firmly hole 46.Therefore must be noted that not the mid portion 22C to top flat 20 applies excessive contractility.If it is excessive to be somebody's turn to do contraction, hole 46 just can not remain on the perforate state, thereby feces will be difficult to enter void space 52 by hole 46.If feces is left on the top flat 22, it will contact with wearer's skin, and produces the stimulation to skin as discussed above, inscribes between washing wearer's work more being bothered wait.

This mid portion 22C can be two-dimentional sheet shape, and can according to top discussed and given appear reason, grant people such as Allen now transferred the possession of to instruct and made for technology given in the United States Patent (USP) 5037416 that has with the applicant.For at this each illustrated embodiment, mid portion 22C from and the intersection of aft section 22R to and the intersection of previous section 22F between longitudinal length, can be about 8.1 ± 1.9 centimetres (3.2 ± 0.75 inches).The longitudinal length of this mid portion 22C preferably can be enough to whole hole 46 is surrounded wherein.

Previous section 22F can not have any elastic extension.The advantage of this structure is, can save material, and can also improve the permeability such as the liquid of urine etc. to catching.And the previous section 22F that does not have elastic extension will be difficult for connecing with the close kiss of wearer, thereby can make genital area feel more comfortable, and will be all the more so to the male wearer.

For at this each illustrated embodiment, previous section 22F hold from the Attacking Midfielder limit 32 to and the intersection of mid portion 22C between longitudinal size, can be about 16.8 ± 1.9 centimetres (6.6 ± 0.75 inches).And previous section 22F can have the longitudinal length longer than aft section 22R.

With reference to figure 4, in a different embodiment, can be with the elastic webbing 54 of some linearities, rather than use two-dimentional sheet, elasticity is applied on the aft section 22R and/or mid portion 22C of top flat 22.Elastic webbing 54 is to be arranged on along the longitudinal direction among the aft section 22R, and preferably longitudinally parallel to each other.Elastic webbing 54 is longitudinal direction among the part 22R in the back, and preferably parallel to each other, although as shown in the figure, they have certain deviation also can allow in the horizontal.

In this structure, aft section 22R can have an elastic webbing 54 to overlap with longitudinal axis LL, thereby makes aft section 22R can be drawn in wearer's the buttocks groove.If necessary, several outer elastic bands 54 can also be set on the part 22R in the back, and they are preferably with respect to longitudinal axis balanced configuration.If these elastic webbings 54 in the back on the part 22R have in the horizontal depart from, they diverged to low back end limit 34 so that aft section 22R can be adaptive with wearer's buttocks more accurately, kiss connects.

Mid portion 22C can have and is parallel to transverse axis T T and in alignment with the plurality of elastic band 54 in hole 46, or has and be positioned at lateral shaft TT either side and the misalignment plurality of elastic band 54 that 46 edge laterally stretches in the hole.

In arbitrary specific structure, be arranged on elastic webbing longitudinally 54 on the aft section 22R or the horizontal elastic webbing 54 on mid portion 22C, all not necessarily.Only importantly, its aft section 22R should have the assembly that can be used for vertically shrinking aft section 22R, and mid portion 22C should have the assembly that is used to shrink mid portion 22C.

If necessary, elastic webbing 54 can also be contained in according in the top flat 22 of the present invention's structure or in the disposable absorbent article 20.This elastic webbing 54 can be granted people's such as DeMarais United States Patent (USP) 4892536 given technology instructions according to aforesaid January 9 nineteen ninety and pack into, this patent has been transferred the possession of to total with the applicant and introduce as a reference at this, elastic webbing 54 can be packed in the top flat 22 of the present invention and a kind of particularly preferred mode in the disposable absorbent article 20 to be used to illustrate.In a particularly preferred embodiment, elastic webbing 54 can have the elastic extension described in the foregoing United States Patent (USP) 5037416 of granting people such as Allen on August 6th, 1991, this patent has been transferred the possession of for having with the applicant and introducing as a reference at this, to be used to illustrate the preferred structure of this elastic webbing 54.

Referring to Fig. 5, in another embodiment,

various piece

22F, 22C, 22R can overlap each other in the vertical.For example, mid portion 22C can vertically stretch always and be provided with in the zone of previous section 22F and/or aft section 22R.This structure can make mid portion 22C slightly be H shape.

Referring to Fig. 6, the advantage of this structure be can be formed with among the part 22R in the back the cavity 46 that receives feces '.According to the relative size of three

part

22F, 22C, 22R, cavity 46 ' may be included among aft section 22R and the mid portion 22C.This structure is used for porose 46 embodiment need be set in top flat 22, is particularly advantageous.Therefore, the top flat 22 of constructing according to the present invention also can be not have hole 46, and can be used in expediently in the disposable absorbent article 20.In such an embodiment, core 26 can also have curve or linear spill line in the vertical, so that make core 26 be easy to form shape desired, as shown in Figure 6.

Referring to Fig. 7, in another conversion embodiment, the demarcation line between three

part

22R, 22C, 22F does not need to be linearity or parallel to each other.If necessary, these demarcation line also can be curves, and recessedly respectively hold limit 32 and low back end limit 34 to the Attacking Midfielder.This structure than the advantage that structure had shown in Figure 1 is, hole 46 can be by a single seam on the top flat 22, or analogous shape forms, and can reduce hole 46 along transversely closed probability.(not shown) in another conversion embodiment, demarcation line also can be curve and protrudingly respectively to hold limit 32 and low back end limit 34 and recessed to transverse axis TT to the Attacking Midfielder.This structure is that aft section 22R and mid portion 22C can be more accurate and cosily consistent with wearer's the bodily form than the advantage that structure had shown in Figure 1.

Be understood that, in the present invention's scope required for protection, also have many kinds of conversion and modification.For example, one among mid portion 22C or the aft section 22R can have elastic webbing 54, and with as the assembly of elastic extension is provided, and another can have flexure strip, with as the assembly that elastic extension is provided.Can be aft section 22R or mid portion 22C, the selection of the specific components of elastic extension is provided is unessential, and importantly this elastic extension (if any) should appear on the specific direction and position of aforesaid three

part

22F, 22C, 22R.

If necessary, mid portion 22C and aft section 22R can also have the bidirectional elastic retractility.In this structure, aft section 22R has longitudinal extension as discussed above, and mid portion 22C has transversal stretching as discussed above.And each this

part

22R, 22C as laterally or vertically, also have retractility on another principal direction.Yet, for aft section 22R with bidirectional elastic retractility or mid portion 22C, its in the vertical and telescopic level transversely and needing not be must equate.

Those skilled in the art are understood that, hole 46 and mid portion 22C also should have suitable size and set-up mode, so that hole 46 can entirely be positioned among the mid portion 22C, and can be so that hole 46 strides across mid portion 22C and enters into previous section 22F or the zone at one of aft section 22R place.If necessary, can also selecting hole 46 and size and the set-up mode of three

part

22F, 22C, 22R, so that hole 46 can stride across mid portion 22C and enter into simultaneously among the previous section 22F and aft section 22R in the outside.

Be understood that other parts also can suitably be configured among three

part

22F, 22C, the 22R of top flat 22.For example, a sheet that does not have elastic extension can be inlaid between among mid portion 22C and previous section 22F and the aft section 22R one or two.And, the sheet that does not have the sheet of elastic extension or have an anisotropic elastic extension can also be included among given

part

22F, 22C or the 22R.

Be understood that, can also have many kinds other modification and the combination of above-mentioned modification, but they all are included within the scope of protection of present invention.

Claims

1. top flat (22) that is used for disposable absorbent article (20), this absorbent article (20) has an Attacking Midfielder and holds limit (32), a low back end limit (34) and a longitudinal axis (LL), and described top flat (22) comprising:

Attacking Midfielder with described disposable absorbent article (20) holds the juxtaposed previous section in limit (32) (22F);

The juxtaposed aft section in low back end limit (34) (22R) with described disposable absorbent article (20); And

A mid portion (22C) that is positioned between described previous section (22F) and the described aft section (22R),

It is characterized in that described previous section (22F) does not have elasticity; Described aft section (22R) but be elastic elongation longitudinally; Described mid portion (22C) but be along horizontal elastic elongation;

Described mid portion (22C) is H shape, thereby this mid portion extends longitudinally at least one of described previous section (22F) and described aft section (22R).

2. the top flat (22) that is used for disposable absorbent article (20) as claimed in claim 1 is characterized in that, described top flat (22) also comprises and is positioned at described part (shaped form between 22C) is had a common boundary for 22F, 22R.

3. the top flat (22) that is used for disposable absorbent article (20) as claimed in claim 1 or 2 is characterized in that described top flat (22) is not with holes, and has formed one at least in order to hold excremental vestibule (46) on described aft section.

4. the top flat (22) that is used for disposable absorbent article (20) as claimed in claim 1 or 2 is characterized in that described aft section comprises a flexure strip.

5. the top flat (22) that is used for disposable absorbent article (20) as claimed in claim 1 or 2 is characterized in that, described mid portion comprises linear elastic webbing.

6. the top flat (22) that is used for disposable absorbent article (20) as claimed in claim 1 or 2 is characterized in that described mid portion comprises an elastic webbing.

7. top flat that is used for disposable absorbent article, this absorbent article has an Attacking Midfielder and holds limit, a low back end limit and a longitudinal axis, and described top flat comprises:

Attacking Midfielder with described disposable absorbent article holds the juxtaposed previous section in limit, and described previous section does not have elasticity;

Juxtaposed aft section in low back end limit with described disposable absorbent article, but described aft section is an elastic elongation longitudinally; And

Mid portion between described previous section and described aft section, but described mid portion is along horizontal elastic elongation.

8. top flat as claimed in claim 7 is characterized in that at least one of described aft section and described mid portion comprises flexure strip.

9. top flat as claimed in claim 7 is characterized in that at least one of described aft section and described mid portion comprises the linear elasticity band.

10. as claim 7,8 or 9 described top flats, it is characterized in that described top flat is not with holes, and on described aft section, formed one and be used to hold excremental vestibule.